git.sesse.net Git - vlc/blob - modules/mux/avi.c

   1 /*****************************************************************************
   2  * avi.c
   3  *****************************************************************************
   4  * Copyright (C) 2001, 2002 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Laurent Aimar <fenrir@via.ecp.fr>
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  22  *****************************************************************************/
  23
  24 /*****************************************************************************
  25  * Preamble
  26  *****************************************************************************/
  27 /* TODO: add OpenDML write support */
  28
  29
  30 #include <vlc/vlc.h>
  31 #include <vlc_sout.h>
  32 #include <vlc_block.h>
  33 #include <vlc_codecs.h>
  34
  35 /*****************************************************************************
  36  * Module descriptor
  37  *****************************************************************************/
  38 static int  Open   ( vlc_object_t * );
  39 static void Close  ( vlc_object_t * );
  40
  41 vlc_module_begin();
  42     set_description( _("AVI muxer") );
  43     set_category( CAT_SOUT );
  44     set_subcategory( SUBCAT_SOUT_MUX );
  45     set_capability( "sout mux", 5 );
  46     add_shortcut( "avi" );
  47     set_callbacks( Open, Close );
  48 vlc_module_end();
  49
  50
  51 /*****************************************************************************
  52  * Local prototypes
  53  *****************************************************************************/
  54 static int Control( sout_mux_t *, int, va_list );
  55 static int AddStream( sout_mux_t *, sout_input_t * );
  56 static int DelStream( sout_mux_t *, sout_input_t * );
  57 static int Mux      ( sout_mux_t * );
  58
  59 typedef struct avi_stream_s
  60 {
  61     int i_cat;
  62
  63     char fcc[4];
  64
  65     mtime_t i_duration;       // in µs
  66
  67     int     i_frames;        // total frame count
  68     int64_t i_totalsize;    // total stream size
  69
  70     float   f_fps;
  71     int     i_bitrate;
  72
  73     BITMAPINFOHEADER    *p_bih;
  74     WAVEFORMATEX        *p_wf;
  75
  76 } avi_stream_t;
  77
  78 typedef struct avi_idx1_entry_s
  79 {
  80     char     fcc[4];
  81     uint32_t i_flags;
  82     uint32_t i_pos;
  83     uint32_t i_length;
  84
  85 } avi_idx1_entry_t;
  86
  87 typedef struct avi_idx1_s
  88 {
  89     unsigned int i_entry_count;
  90     unsigned int i_entry_max;
  91
  92     avi_idx1_entry_t *entry;
  93 } avi_idx1_t;
  94
  95 struct sout_mux_sys_t
  96 {
  97     vlc_bool_t b_write_header;
  98
  99     int i_streams;
 100     int i_stream_video;
 101
 102     off_t i_movi_size;
 103     avi_stream_t stream[100];
 104
 105     avi_idx1_t idx1;
 106     off_t i_idx1_size;
 107
 108 };
 109
 110 // FIXME FIXME
 111 #define HDR_SIZE 10240
 112
 113 /* Flags in avih */
 114 #define AVIF_HASINDEX       0x00000010  // Index at end of file?
 115 #define AVIF_ISINTERLEAVED  0x00000100
 116 #define AVIF_TRUSTCKTYPE    0x00000800  // Use CKType to find key frames?
 117
 118 /* Flags for index */
 119 #define AVIIF_KEYFRAME      0x00000010L /* this frame is a key frame.*/
 120
 121
 122 static block_t *avi_HeaderCreateRIFF( sout_mux_t * );
 123 static block_t *avi_HeaderCreateidx1( sout_mux_t * );
 124
 125 static void SetFCC( uint8_t *p, char *fcc )
 126 {
 127     memcpy( p, fcc, 4 );
 128 }
 129
 130 /*****************************************************************************
 131  * Open:
 132  *****************************************************************************/
 133 static int Open( vlc_object_t *p_this )
 134 {
 135     sout_mux_t      *p_mux = (sout_mux_t*)p_this;
 136     sout_mux_sys_t  *p_sys = p_mux->p_sys;
 137
 138     msg_Dbg( p_mux, "AVI muxer opened" );
 139
 140     p_sys = malloc( sizeof( sout_mux_sys_t ) );
 141     p_sys->i_streams = 0;
 142     p_sys->i_stream_video = -1;
 143     p_sys->i_movi_size = 0;
 144
 145     p_sys->idx1.i_entry_count = 0;
 146     p_sys->idx1.i_entry_max = 10000;
 147     p_sys->idx1.entry = calloc( p_sys->idx1.i_entry_max,
 148                                 sizeof( avi_idx1_entry_t ) );
 149     p_sys->b_write_header = VLC_TRUE;
 150
 151
 152     p_mux->pf_control   = Control;
 153     p_mux->pf_addstream = AddStream;
 154     p_mux->pf_delstream = DelStream;
 155     p_mux->pf_mux       = Mux;
 156     p_mux->p_sys        = p_sys;
 157
 158     return VLC_SUCCESS;
 159 }
 160
 161 /*****************************************************************************
 162  * Close:
 163  *****************************************************************************/
 164 static void Close( vlc_object_t * p_this )
 165 {
 166     sout_mux_t      *p_mux = (sout_mux_t*)p_this;
 167     sout_mux_sys_t  *p_sys = p_mux->p_sys;
 168
 169     block_t       *p_hdr, *p_idx1;
 170     int                 i_stream;
 171
 172     msg_Dbg( p_mux, "AVI muxer closed" );
 173
 174     /* first create idx1 chunk (write at the end of the stream */
 175     p_idx1 = avi_HeaderCreateidx1( p_mux );
 176     p_sys->i_idx1_size = p_idx1->i_buffer;
 177     sout_AccessOutWrite( p_mux->p_access, p_idx1 );
 178
 179     /* calculate some value for headers creations */
 180     for( i_stream = 0; i_stream < p_sys->i_streams; i_stream++ )
 181     {
 182         avi_stream_t *p_stream;
 183
 184         p_stream = &p_sys->stream[i_stream];
 185
 186         p_stream->f_fps = 25;
 187         if( p_stream->i_duration > 0 )
 188         {
 189             p_stream->f_fps = (float)p_stream->i_frames /
 190                               ( (float)p_stream->i_duration /
 191                                 (float)1000000 );
 192         }
 193         p_stream->i_bitrate = 128 * 1024;
 194         if( p_stream->i_duration > 0 )
 195         {
 196             p_stream->i_bitrate =
 197                 8 * (uint64_t)1000000 *
 198                     (uint64_t)p_stream->i_totalsize /
 199                     (uint64_t)p_stream->i_duration;
 200         }
 201         msg_Info( p_mux, "stream[%d] duration:"I64Fd" totalsize:"I64Fd
 202                   " frames:%d fps:%f kb/s:%d",
 203                   i_stream,
 204                   (int64_t)p_stream->i_duration / (int64_t)1000000,
 205                   p_stream->i_totalsize,
 206                   p_stream->i_frames,
 207                   p_stream->f_fps, p_stream->i_bitrate/1024 );
 208     }
 209
 210     p_hdr = avi_HeaderCreateRIFF( p_mux );
 211     sout_AccessOutSeek( p_mux->p_access, 0 );
 212     sout_AccessOutWrite( p_mux->p_access, p_hdr );
 213 }
 214
 215 static int Control( sout_mux_t *p_mux, int i_query, va_list args )
 216 {
 217     vlc_bool_t *pb_bool;
 218     char **ppsz;
 219
 220    switch( i_query )
 221    {
 222        case MUX_CAN_ADD_STREAM_WHILE_MUXING:
 223            pb_bool = (vlc_bool_t*)va_arg( args, vlc_bool_t * );
 224            *pb_bool = VLC_FALSE;
 225            return VLC_SUCCESS;
 226
 227        case MUX_GET_ADD_STREAM_WAIT:
 228            pb_bool = (vlc_bool_t*)va_arg( args, vlc_bool_t * );
 229            *pb_bool = VLC_TRUE;
 230            return VLC_SUCCESS;
 231
 232        case MUX_GET_MIME:
 233            ppsz = (char**)va_arg( args, char ** );
 234            *ppsz = strdup( "video/avi" );
 235            return VLC_SUCCESS;
 236
 237         default:
 238             return VLC_EGENERIC;
 239    }
 240 }
 241
 242 static int AddStream( sout_mux_t *p_mux, sout_input_t *p_input )
 243 {
 244     sout_mux_sys_t  *p_sys = p_mux->p_sys;
 245     avi_stream_t    *p_stream;
 246
 247     if( p_sys->i_streams >= 100 )
 248     {
 249         msg_Err( p_mux, "too many streams" );
 250         return( -1 );
 251     }
 252
 253     msg_Dbg( p_mux, "adding input" );
 254     p_input->p_sys = malloc( sizeof( int ) );
 255
 256     *((int*)p_input->p_sys) = p_sys->i_streams;
 257     p_stream = &p_sys->stream[p_sys->i_streams];
 258
 259     switch( p_input->p_fmt->i_cat )
 260     {
 261         case AUDIO_ES:
 262             p_stream->i_cat = AUDIO_ES;
 263             p_stream->fcc[0] = '0' + p_sys->i_streams / 10;
 264             p_stream->fcc[1] = '0' + p_sys->i_streams % 10;
 265             p_stream->fcc[2] = 'w';
 266             p_stream->fcc[3] = 'b';
 267
 268             p_stream->p_bih = NULL;
 269
 270             p_stream->p_wf  = malloc( sizeof( WAVEFORMATEX ) +
 271                                       p_input->p_fmt->i_extra );
 272 #define p_wf p_stream->p_wf
 273             p_wf->cbSize = p_input->p_fmt->i_extra;
 274             if( p_wf->cbSize > 0 )
 275             {
 276                 memcpy( &p_wf[1],
 277                         p_input->p_fmt->p_extra,
 278                         p_input->p_fmt->i_extra );
 279             }
 280             p_wf->nChannels      = p_input->p_fmt->audio.i_channels;
 281             p_wf->nSamplesPerSec = p_input->p_fmt->audio.i_rate;
 282             p_wf->nBlockAlign    = p_input->p_fmt->audio.i_blockalign;
 283             p_wf->nAvgBytesPerSec= p_input->p_fmt->i_bitrate / 8;
 284             p_wf->wBitsPerSample = 0;
 285
 286             switch( p_input->p_fmt->i_codec )
 287             {
 288                 case VLC_FOURCC( 'a', '5', '2', ' ' ):
 289                     p_wf->wFormatTag = WAVE_FORMAT_A52;
 290                     break;
 291                 case VLC_FOURCC( 'm', 'p', 'g', 'a' ):
 292                     p_wf->wFormatTag = WAVE_FORMAT_MPEGLAYER3;
 293                     break;
 294                 case VLC_FOURCC( 'w', 'm', 'a', '1' ):
 295                     p_wf->wFormatTag = WAVE_FORMAT_WMA1;
 296                     break;
 297                 case VLC_FOURCC( 'w', 'm', 'a', ' ' ):
 298                 case VLC_FOURCC( 'w', 'm', 'a', '2' ):
 299                     p_wf->wFormatTag = WAVE_FORMAT_WMA2;
 300                     break;
 301                 case VLC_FOURCC( 'w', 'm', 'a', 'p' ):
 302                     p_wf->wFormatTag = WAVE_FORMAT_WMAP;
 303                     break;
 304                 case VLC_FOURCC( 'w', 'm', 'a', 'l' ):
 305                     p_wf->wFormatTag = WAVE_FORMAT_WMAL;
 306                     break;
 307                     /* raw codec */
 308                 case VLC_FOURCC( 'u', '8', ' ', ' ' ):
 309                     p_wf->wFormatTag = WAVE_FORMAT_PCM;
 310                     p_wf->nBlockAlign= p_wf->nChannels;
 311                     p_wf->wBitsPerSample = 8;
 312                     break;
 313                 case VLC_FOURCC( 's', '1', '6', 'l' ):
 314                     p_wf->wFormatTag = WAVE_FORMAT_PCM;
 315                     p_wf->nBlockAlign= 2 * p_wf->nChannels;
 316                     p_wf->wBitsPerSample = 16;
 317                     break;
 318                 case VLC_FOURCC( 's', '2', '4', 'l' ):
 319                     p_wf->wFormatTag = WAVE_FORMAT_PCM;
 320                     p_wf->nBlockAlign= 3 * p_wf->nChannels;
 321                     p_wf->wBitsPerSample = 24;
 322                     break;
 323                 case VLC_FOURCC( 's', '3', '2', 'l' ):
 324                     p_wf->wFormatTag = WAVE_FORMAT_PCM;
 325                     p_wf->nBlockAlign= 4 * p_wf->nChannels;
 326                     p_wf->wBitsPerSample = 32;
 327                     break;
 328                 default:
 329                     return VLC_EGENERIC;
 330             }
 331 #undef p_wf
 332             break;
 333         case VIDEO_ES:
 334             p_stream->i_cat = VIDEO_ES;
 335             p_stream->fcc[0] = '0' + p_sys->i_streams / 10;
 336             p_stream->fcc[1] = '0' + p_sys->i_streams % 10;
 337             p_stream->fcc[2] = 'd';
 338             p_stream->fcc[3] = 'c';
 339             if( p_sys->i_stream_video < 0 )
 340             {
 341                 p_sys->i_stream_video = p_sys->i_streams;
 342             }
 343             p_stream->p_wf  = NULL;
 344             p_stream->p_bih = malloc( sizeof( BITMAPINFOHEADER ) +
 345                                       p_input->p_fmt->i_extra );
 346 #define p_bih p_stream->p_bih
 347             p_bih->biSize  = sizeof( BITMAPINFOHEADER ) +
 348                              p_input->p_fmt->i_extra;
 349             if( p_input->p_fmt->i_extra > 0 )
 350             {
 351                 memcpy( &p_bih[1],
 352                         p_input->p_fmt->p_extra,
 353                         p_input->p_fmt->i_extra );
 354             }
 355             p_bih->biWidth = p_input->p_fmt->video.i_width;
 356             p_bih->biHeight= p_input->p_fmt->video.i_height;
 357             p_bih->biPlanes= 1;
 358             p_bih->biBitCount       = 24;
 359             p_bih->biSizeImage      = 0;
 360             p_bih->biXPelsPerMeter  = 0;
 361             p_bih->biYPelsPerMeter  = 0;
 362             p_bih->biClrUsed        = 0;
 363             p_bih->biClrImportant   = 0;
 364             switch( p_input->p_fmt->i_codec )
 365             {
 366                 case VLC_FOURCC( 'm', 'p', '4', 'v' ):
 367                     p_bih->biCompression = VLC_FOURCC( 'X', 'V', 'I', 'D' );
 368                     break;
 369                 default:
 370                     p_bih->biCompression = p_input->p_fmt->i_codec;
 371                     break;
 372             }
 373 #undef p_bih
 374             break;
 375         default:
 376             return( VLC_EGENERIC );
 377     }
 378     p_stream->i_totalsize = 0;
 379     p_stream->i_frames    = 0;
 380     p_stream->i_duration  = 0;
 381
 382     /* fixed later */
 383     p_stream->f_fps = 25;
 384     p_stream->i_bitrate = 128 * 1024;
 385
 386     p_sys->i_streams++;
 387     return( VLC_SUCCESS );
 388 }
 389
 390 static int DelStream( sout_mux_t *p_mux, sout_input_t *p_input )
 391 {
 392
 393     msg_Dbg( p_mux, "removing input" );
 394
 395     free( p_input->p_sys );
 396     return( 0 );
 397 }
 398
 399 static int Mux      ( sout_mux_t *p_mux )
 400 {
 401     sout_mux_sys_t  *p_sys = p_mux->p_sys;
 402     avi_stream_t    *p_stream;
 403     int i_stream;
 404     int i;
 405
 406     if( p_sys->b_write_header )
 407     {
 408         block_t *p_hdr;
 409
 410         msg_Dbg( p_mux, "writing header" );
 411
 412         p_hdr = avi_HeaderCreateRIFF( p_mux );
 413         sout_AccessOutWrite( p_mux->p_access, p_hdr );
 414
 415         p_sys->b_write_header = VLC_FALSE;
 416     }
 417
 418     for( i = 0; i < p_mux->i_nb_inputs; i++ )
 419     {
 420         int i_count;
 421         block_fifo_t *p_fifo;
 422
 423         i_stream = *((int*)p_mux->pp_inputs[i]->p_sys );
 424         p_stream = &p_sys->stream[i_stream];
 425
 426         p_fifo = p_mux->pp_inputs[i]->p_fifo;
 427         i_count = block_FifoCount(  p_fifo );
 428         while( i_count > 1 )
 429         {
 430             avi_idx1_entry_t *p_idx;
 431             block_t *p_data;
 432
 433             p_data = block_FifoGet( p_fifo );
 434             if( block_FifoCount( p_fifo ) > 0 )
 435             {
 436                 block_t *p_next = block_FifoShow( p_fifo );
 437                 p_data->i_length = p_next->i_dts - p_data->i_dts;
 438             }
 439
 440             p_stream->i_frames++;
 441             if( p_data->i_length < 0 )
 442             {
 443                 msg_Warn( p_mux, "argg length < 0 l" );
 444                 block_Release( p_data );
 445                 i_count--;
 446                 continue;
 447             }
 448             p_stream->i_duration  += p_data->i_length;
 449             p_stream->i_totalsize += p_data->i_buffer;
 450
 451             /* add idx1 entry for this frame */
 452             p_idx = &p_sys->idx1.entry[p_sys->idx1.i_entry_count];
 453             memcpy( p_idx->fcc, p_stream->fcc, 4 );
 454             p_idx->i_flags = AVIIF_KEYFRAME;
 455             p_idx->i_pos   = p_sys->i_movi_size + 4;
 456             p_idx->i_length= p_data->i_buffer;
 457             p_sys->idx1.i_entry_count++;
 458             if( p_sys->idx1.i_entry_count >= p_sys->idx1.i_entry_max )
 459             {
 460                 p_sys->idx1.i_entry_max += 10000;
 461                 p_sys->idx1.entry = realloc( p_sys->idx1.entry,
 462                                              p_sys->idx1.i_entry_max * sizeof( avi_idx1_entry_t ) );
 463             }
 464
 465             p_data = block_Realloc( p_data, 8, p_data->i_buffer );
 466             if( p_data )
 467             {
 468                 SetFCC( p_data->p_buffer, p_stream->fcc );
 469                 SetDWLE( p_data->p_buffer + 4, p_data->i_buffer - 8 );
 470
 471                 if( p_data->i_buffer & 0x01 )
 472                 {
 473                     p_data = block_Realloc( p_data, 0, p_data->i_buffer + 1 );
 474                     p_data->p_buffer[ p_data->i_buffer - 1 ] = '\0';
 475                 }
 476
 477                 p_sys->i_movi_size += p_data->i_buffer;
 478                 sout_AccessOutWrite( p_mux->p_access, p_data );
 479             }
 480
 481             i_count--;
 482         }
 483
 484     }
 485     return( 0 );
 486 }
 487
 488 /****************************************************************************/
 489 /****************************************************************************/
 490 /****************************************************************************/
 491 /****************************************************************************/
 492
 493 typedef struct buffer_out_s
 494 {
 495     int      i_buffer_size;
 496     int      i_buffer;
 497     uint8_t  *p_buffer;
 498
 499 } buffer_out_t;
 500
 501 static void bo_Init( buffer_out_t *p_bo, int i_size, uint8_t *p_buffer )
 502 {
 503     p_bo->i_buffer_size = i_size;
 504     p_bo->i_buffer = 0;
 505     p_bo->p_buffer = p_buffer;
 506 }
 507 static void bo_AddByte( buffer_out_t *p_bo, uint8_t i )
 508 {
 509     if( p_bo->i_buffer < p_bo->i_buffer_size )
 510     {
 511         p_bo->p_buffer[p_bo->i_buffer] = i;
 512     }
 513     p_bo->i_buffer++;
 514 }
 515 static void bo_AddWordLE( buffer_out_t *p_bo, uint16_t i )
 516 {
 517     bo_AddByte( p_bo, i &0xff );
 518     bo_AddByte( p_bo, ( ( i >> 8) &0xff ) );
 519 }
 520 static void bo_AddWordBE( buffer_out_t *p_bo, uint16_t i )
 521 {
 522     bo_AddByte( p_bo, ( ( i >> 8) &0xff ) );
 523     bo_AddByte( p_bo, i &0xff );
 524 }
 525 static void bo_AddDWordLE( buffer_out_t *p_bo, uint32_t i )
 526 {
 527     bo_AddWordLE( p_bo, i &0xffff );
 528     bo_AddWordLE( p_bo, ( ( i >> 16) &0xffff ) );
 529 }
 530 static void bo_AddDWordBE( buffer_out_t *p_bo, uint32_t i )
 531 {
 532     bo_AddWordBE( p_bo, ( ( i >> 16) &0xffff ) );
 533     bo_AddWordBE( p_bo, i &0xffff );
 534 }
 535 #if 0
 536 static void bo_AddLWordLE( buffer_out_t *p_bo, uint64_t i )
 537 {
 538     bo_AddDWordLE( p_bo, i &0xffffffff );
 539     bo_AddDWordLE( p_bo, ( ( i >> 32) &0xffffffff ) );
 540 }
 541 static void bo_AddLWordBE( buffer_out_t *p_bo, uint64_t i )
 542 {
 543     bo_AddDWordBE( p_bo, ( ( i >> 32) &0xffffffff ) );
 544     bo_AddDWordBE( p_bo, i &0xffffffff );
 545 }
 546 #endif
 547
 548 static void bo_AddFCC( buffer_out_t *p_bo, const char *fcc )
 549 {
 550     bo_AddByte( p_bo, fcc[0] );
 551     bo_AddByte( p_bo, fcc[1] );
 552     bo_AddByte( p_bo, fcc[2] );
 553     bo_AddByte( p_bo, fcc[3] );
 554 }
 555
 556 static void bo_AddMem( buffer_out_t *p_bo, int i_size, uint8_t *p_mem )
 557 {
 558     int i;
 559
 560     for( i = 0; i < i_size; i++ )
 561     {
 562         bo_AddByte( p_bo, p_mem[i] );
 563     }
 564 }
 565
 566 /****************************************************************************
 567  ****************************************************************************
 568  **
 569  ** avi header generation
 570  **
 571  ****************************************************************************
 572  ****************************************************************************/
 573 #define AVI_BOX_ENTER( fcc ) \
 574     buffer_out_t _bo_sav_; \
 575     bo_AddFCC( p_bo, fcc ); \
 576     _bo_sav_ = *p_bo; \
 577     bo_AddDWordLE( p_bo, 0 )
 578
 579 #define AVI_BOX_ENTER_LIST( fcc ) \
 580     AVI_BOX_ENTER( "LIST" ); \
 581     bo_AddFCC( p_bo, fcc )
 582
 583 #define AVI_BOX_EXIT( i_err ) \
 584     if( p_bo->i_buffer&0x01 ) bo_AddByte( p_bo, 0 ); \
 585     bo_AddDWordLE( &_bo_sav_, p_bo->i_buffer - _bo_sav_.i_buffer - 4 ); \
 586     return( i_err );
 587
 588 static int avi_HeaderAdd_avih( sout_mux_t *p_mux,
 589                                buffer_out_t *p_bo )
 590 {
 591     sout_mux_sys_t  *p_sys = p_mux->p_sys;
 592     avi_stream_t    *p_video = NULL;
 593     int         i_stream;
 594     uint32_t    i_microsecperframe;
 595     int         i_maxbytespersec;
 596     int         i_totalframes;
 597     AVI_BOX_ENTER( "avih" );
 598
 599     if( p_sys->i_stream_video >= 0 )
 600     {
 601         p_video = &p_sys->stream[p_sys->i_stream_video];
 602         if( p_video->i_frames <= 0 )
 603         {
 604         //    p_video = NULL;
 605         }
 606     }
 607
 608     if( p_video )
 609     {
 610         i_microsecperframe =
 611             (uint32_t)( (float)1000000 /
 612                         (float)p_sys->stream[p_sys->i_stream_video].f_fps );
 613         i_totalframes = p_sys->stream[p_sys->i_stream_video].i_frames;
 614     }
 615     else
 616     {
 617         msg_Warn( p_mux, "avi file without video track isn't a good idea..." );
 618         i_microsecperframe = 0;
 619         i_totalframes = 0;
 620     }
 621
 622     for( i_stream = 0,i_maxbytespersec = 0; i_stream < p_sys->i_streams; i_stream++ )
 623     {
 624         if( p_sys->stream[i_stream].i_duration > 0 )
 625         {
 626             i_maxbytespersec +=
 627                 p_sys->stream[i_stream].i_totalsize /
 628                 p_sys->stream[i_stream].i_duration;
 629         }
 630     }
 631
 632     bo_AddDWordLE( p_bo, i_microsecperframe );
 633     bo_AddDWordLE( p_bo, i_maxbytespersec );
 634     bo_AddDWordLE( p_bo, 0 );                   /* padding */
 635     bo_AddDWordLE( p_bo, AVIF_TRUSTCKTYPE |
 636                          AVIF_HASINDEX |
 637                          AVIF_ISINTERLEAVED );  /* flags */
 638     bo_AddDWordLE( p_bo, i_totalframes );
 639     bo_AddDWordLE( p_bo, 0 );                   /* initial frame */
 640     bo_AddDWordLE( p_bo, p_sys->i_streams );    /* streams count */
 641     bo_AddDWordLE( p_bo, 1024 * 1024 );         /* suggested buffer size */
 642     if( p_video )
 643     {
 644         bo_AddDWordLE( p_bo, p_video->p_bih->biWidth );
 645         bo_AddDWordLE( p_bo, p_video->p_bih->biHeight );
 646     }
 647     else
 648     {
 649         bo_AddDWordLE( p_bo, 0 );
 650         bo_AddDWordLE( p_bo, 0 );
 651     }
 652     bo_AddDWordLE( p_bo, 0 );                   /* ???? */
 653     bo_AddDWordLE( p_bo, 0 );                   /* ???? */
 654     bo_AddDWordLE( p_bo, 0 );                   /* ???? */
 655     bo_AddDWordLE( p_bo, 0 );                   /* ???? */
 656
 657     AVI_BOX_EXIT( 0 );
 658 }
 659 static int avi_HeaderAdd_strh( sout_mux_t   *p_mux,
 660                                buffer_out_t *p_bo,
 661                                avi_stream_t *p_stream )
 662 {
 663     AVI_BOX_ENTER( "strh" );
 664
 665     switch( p_stream->i_cat )
 666     {
 667         case VIDEO_ES:
 668             {
 669                 bo_AddFCC( p_bo, "vids" );
 670                 bo_AddDWordBE( p_bo, p_stream->p_bih->biCompression );
 671                 bo_AddDWordLE( p_bo, 0 );   /* flags */
 672                 bo_AddWordLE(  p_bo, 0 );   /* priority */
 673                 bo_AddWordLE(  p_bo, 0 );   /* langage */
 674                 bo_AddDWordLE( p_bo, 0 );   /* initial frame */
 675                 bo_AddDWordLE( p_bo, 1000 );/* scale */
 676                 bo_AddDWordLE( p_bo, (uint32_t)( 1000 * p_stream->f_fps ));
 677                 bo_AddDWordLE( p_bo, 0 );   /* start */
 678                 bo_AddDWordLE( p_bo, p_stream->i_frames );
 679                 bo_AddDWordLE( p_bo, 1024 * 1024 );
 680                 bo_AddDWordLE( p_bo, -1 );  /* quality */
 681                 bo_AddDWordLE( p_bo, 0 );   /* samplesize */
 682                 bo_AddWordLE(  p_bo, 0 );   /* ??? */
 683                 bo_AddWordLE(  p_bo, 0 );   /* ??? */
 684                 bo_AddWordLE(  p_bo, p_stream->p_bih->biWidth );
 685                 bo_AddWordLE(  p_bo, p_stream->p_bih->biHeight );
 686             }
 687             break;
 688         case AUDIO_ES:
 689             {
 690                 int i_rate, i_scale, i_samplesize;
 691
 692                 i_samplesize = p_stream->p_wf->nBlockAlign;
 693                 if( i_samplesize > 1 )
 694                 {
 695                     i_scale = i_samplesize;
 696                     i_rate = /*i_scale **/ p_stream->i_bitrate / 8;
 697                 }
 698                 else
 699                 {
 700                     i_samplesize = 1;
 701                     i_scale = 1000;
 702                     i_rate = 1000 * p_stream->i_bitrate / 8;
 703                 }
 704                 bo_AddFCC( p_bo, "auds" );
 705                 bo_AddDWordLE( p_bo, 0 );   /* tag */
 706                 bo_AddDWordLE( p_bo, 0 );   /* flags */
 707                 bo_AddWordLE(  p_bo, 0 );   /* priority */
 708                 bo_AddWordLE(  p_bo, 0 );   /* langage */
 709                 bo_AddDWordLE( p_bo, 0 );   /* initial frame */
 710                 bo_AddDWordLE( p_bo, i_scale );/* scale */
 711                 bo_AddDWordLE( p_bo, i_rate );
 712                 bo_AddDWordLE( p_bo, 0 );   /* start */
 713                 bo_AddDWordLE( p_bo, p_stream->i_frames );
 714                 bo_AddDWordLE( p_bo, 10 * 1024 );
 715                 bo_AddDWordLE( p_bo, -1 );  /* quality */
 716                 bo_AddDWordLE( p_bo, i_samplesize );
 717                 bo_AddWordLE(  p_bo, 0 );   /* ??? */
 718                 bo_AddWordLE(  p_bo, 0 );   /* ??? */
 719                 bo_AddWordLE(  p_bo, 0 );
 720                 bo_AddWordLE(  p_bo, 0 );
 721             }
 722             break;
 723     }
 724
 725     AVI_BOX_EXIT( 0 );
 726 }
 727
 728 static int avi_HeaderAdd_strf( sout_mux_t *p_mux,
 729                                buffer_out_t *p_bo,
 730                                avi_stream_t *p_stream )
 731 {
 732     AVI_BOX_ENTER( "strf" );
 733
 734     switch( p_stream->i_cat )
 735     {
 736         case AUDIO_ES:
 737             bo_AddWordLE( p_bo, p_stream->p_wf->wFormatTag );
 738             bo_AddWordLE( p_bo, p_stream->p_wf->nChannels );
 739             bo_AddDWordLE( p_bo, p_stream->p_wf->nSamplesPerSec );
 740             bo_AddDWordLE( p_bo, p_stream->p_wf->nAvgBytesPerSec );
 741             bo_AddWordLE( p_bo, p_stream->p_wf->nBlockAlign );
 742             bo_AddWordLE( p_bo, p_stream->p_wf->wBitsPerSample );
 743             bo_AddWordLE( p_bo, p_stream->p_wf->cbSize );
 744             bo_AddMem( p_bo, p_stream->p_wf->cbSize, (uint8_t*)&p_stream->p_wf[1] );
 745             break;
 746         case VIDEO_ES:
 747             bo_AddDWordLE( p_bo, p_stream->p_bih->biSize );
 748             bo_AddDWordLE( p_bo, p_stream->p_bih->biWidth );
 749             bo_AddDWordLE( p_bo, p_stream->p_bih->biHeight );
 750             bo_AddWordLE( p_bo, p_stream->p_bih->biPlanes );
 751             bo_AddWordLE( p_bo, p_stream->p_bih->biBitCount );
 752             if( VLC_FOURCC( 0, 0, 0, 1 ) == 0x00000001 )
 753             {
 754                 bo_AddDWordBE( p_bo, p_stream->p_bih->biCompression );
 755             }
 756             else
 757             {
 758                 bo_AddDWordLE( p_bo, p_stream->p_bih->biCompression );
 759             }
 760             bo_AddDWordLE( p_bo, p_stream->p_bih->biSizeImage );
 761             bo_AddDWordLE( p_bo, p_stream->p_bih->biXPelsPerMeter );
 762             bo_AddDWordLE( p_bo, p_stream->p_bih->biYPelsPerMeter );
 763             bo_AddDWordLE( p_bo, p_stream->p_bih->biClrUsed );
 764             bo_AddDWordLE( p_bo, p_stream->p_bih->biClrImportant );
 765             bo_AddMem( p_bo,
 766                        p_stream->p_bih->biSize - sizeof( BITMAPINFOHEADER ),
 767                        (uint8_t*)&p_stream->p_bih[1] );
 768             break;
 769     }
 770
 771     AVI_BOX_EXIT( 0 );
 772 }
 773
 774 static int avi_HeaderAdd_strl( sout_mux_t *p_mux,
 775                                buffer_out_t *p_bo,
 776                                avi_stream_t *p_stream )
 777 {
 778     AVI_BOX_ENTER_LIST( "strl" );
 779
 780     avi_HeaderAdd_strh( p_mux, p_bo, p_stream );
 781     avi_HeaderAdd_strf( p_mux, p_bo, p_stream );
 782
 783     AVI_BOX_EXIT( 0 );
 784 }
 785
 786 static block_t *avi_HeaderCreateRIFF( sout_mux_t *p_mux )
 787 {
 788     sout_mux_sys_t      *p_sys = p_mux->p_sys;
 789     block_t       *p_hdr;
 790     int                 i_stream;
 791     int                 i_maxbytespersec;
 792     int                 i_junk;
 793     buffer_out_t        bo;
 794
 795     p_hdr = block_New( p_mux, HDR_SIZE );
 796     memset( p_hdr->p_buffer, 0, HDR_SIZE );
 797
 798     bo_Init( &bo, HDR_SIZE, p_hdr->p_buffer );
 799
 800     bo_AddFCC( &bo, "RIFF" );
 801     bo_AddDWordLE( &bo, p_sys->i_movi_size + HDR_SIZE - 8 + p_sys->i_idx1_size );
 802     bo_AddFCC( &bo, "AVI " );
 803
 804     bo_AddFCC( &bo, "LIST" );
 805     bo_AddDWordLE( &bo, HDR_SIZE - 8);
 806     bo_AddFCC( &bo, "hdrl" );
 807
 808     avi_HeaderAdd_avih( p_mux, &bo );
 809     for( i_stream = 0,i_maxbytespersec = 0; i_stream < p_sys->i_streams; i_stream++ )
 810     {
 811         avi_HeaderAdd_strl( p_mux, &bo, &p_sys->stream[i_stream] );
 812     }
 813
 814     i_junk = HDR_SIZE - bo.i_buffer - 8 - 12;
 815     bo_AddFCC( &bo, "JUNK" );
 816     bo_AddDWordLE( &bo, i_junk );
 817
 818     bo.i_buffer += i_junk;
 819     bo_AddFCC( &bo, "LIST" );
 820     bo_AddDWordLE( &bo, p_sys->i_movi_size + 4 );
 821     bo_AddFCC( &bo, "movi" );
 822
 823     return( p_hdr );
 824 }
 825
 826 static block_t * avi_HeaderCreateidx1( sout_mux_t *p_mux )
 827 {
 828     sout_mux_sys_t      *p_sys = p_mux->p_sys;
 829     block_t       *p_idx1;
 830     uint32_t            i_idx1_size;
 831     unsigned int        i;
 832     buffer_out_t        bo;
 833
 834     i_idx1_size = 16 * p_sys->idx1.i_entry_count;
 835
 836     p_idx1 = block_New( p_mux, i_idx1_size + 8 );
 837     memset( p_idx1->p_buffer, 0, i_idx1_size );
 838
 839     bo_Init( &bo, i_idx1_size, p_idx1->p_buffer );
 840     bo_AddFCC( &bo, "idx1" );
 841     bo_AddDWordLE( &bo, i_idx1_size );
 842
 843     for( i = 0; i < p_sys->idx1.i_entry_count; i++ )
 844     {
 845         bo_AddFCC( &bo, p_sys->idx1.entry[i].fcc );
 846         bo_AddDWordLE( &bo, p_sys->idx1.entry[i].i_flags );
 847         bo_AddDWordLE( &bo, p_sys->idx1.entry[i].i_pos );
 848         bo_AddDWordLE( &bo, p_sys->idx1.entry[i].i_length );
 849     }
 850
 851     return( p_idx1 );
 852 }
 853